#include <WiFi.h>
#include <time.h>
#include <LiquidCrystal.h>
#include <DHT.h>

#define DHTPIN 4
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal lcd(23, 22, 21, 19, 18, 17);

// ===== WIFI =====
const char* ssid     = "Wokwi-GUEST";
const char* password = "";

// ===== NTP =====
const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = 7 * 3600;   // WIB (UTC+7)
const int   daylightOffset_sec = 0;

// ===== CUSTOM SEGMENTS =====
byte segment[8][8] = {
  { B01111, B11111, B11111, B11111, B11111, B11111, B11111, B11111 },
  { B11111, B11111, B11111, B00000, B00000, B00000, B00000, B00000 },
  { B11110, B11111, B11111, B11111, B11111, B11111, B11111, B11111 },
  { B11111, B11111, B11111, B11111, B11111, B11111, B11111, B01111 },
  { B00000, B00000, B00000, B00000, B00000, B11111, B11111, B11111 },
  { B11111, B11111, B11111, B11111, B11111, B11111, B11111, B11110 },
  { B11111, B11111, B11111, B00000, B00000, B00000, B11111, B11111 },
  { B11111, B00000, B00000, B00000, B00000, B11111, B11111, B11111 }
};

int col = 0;
int number;

// ===== SETUP =====
void setup() {
  lcd.begin(16, 2);

  dht.begin(); 

  for (byte i = 0; i < 8; i++) {
    lcd.createChar(i, segment[i]);
  }

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Connecting.");

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    lcd.print(".");
  }

  lcd.clear();
  lcd.print("wifi connected");
  delay(1500);
  lcd.clear();
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  delay(1000);
}

// ===== LOOP =====
void loop() {
  for (int count = 0; count < 10; count++) {
    lcd.clear();
    showClock();

    delay(500);
  }
  lcd.clear();
  for (int count2 = 0; count2 < 10; count2++) {
    displayDHT();
    delay(500);
  }
  lcd.clear();
  for (int count2 = 0; count2 < 10; count2++) {
    displayDHTH();
    delay(500);
  }
  lcd.clear();
}

// ===== DIGITS =====
void digit0() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)0);
  lcd.write((uint8_t)1);
  lcd.write((uint8_t)2);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)3);
  lcd.write((uint8_t)4);
  lcd.write((uint8_t)5);
}

void digit1() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)1);
  lcd.write((uint8_t)2);
  lcd.setCursor(col + 1, 1);
  lcd.write((uint8_t)5);
}

void digit2() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)2);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)3);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)7);
}

void digit3() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)2);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)5);
}

void digit4() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)3);
  lcd.write((uint8_t)4);
  lcd.write((uint8_t)2);
  lcd.setCursor(col + 2, 1);
  lcd.write((uint8_t)5);
}

void digit5() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)6);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)5);
}

void digit6() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)6);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)3);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)5);
}

void digit7() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)1);
  lcd.write((uint8_t)1);
  lcd.write((uint8_t)2);
  lcd.setCursor(col + 1, 1);
  lcd.write((uint8_t)0);
}

void digit8() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)2);
  lcd.setCursor(col, 1);
  lcd.write((uint8_t)3);
  lcd.write((uint8_t)7);
  lcd.write((uint8_t)5);
}

void digit9() {
  lcd.setCursor(col, 0);
  lcd.write((uint8_t)0);
  lcd.write((uint8_t)6);
  lcd.write((uint8_t)2);
  lcd.setCursor(col + 2, 1);
  lcd.write((uint8_t)5);
}

void showDigit() {
  switch (number) {
    case 0: digit0(); break;
    case 1: digit1(); break;
    case 2: digit2(); break;
    case 3: digit3(); break;
    case 4: digit4(); break;
    case 5: digit5(); break;
    case 6: digit6(); break;
    case 7: digit7(); break;
    case 8: digit8(); break;
    case 9: digit9(); break;
  }
}

// ===== SHOW CLOCK =====
void showClock() {
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) return;

  int hours = timeinfo.tm_hour;
  int minutes = timeinfo.tm_min;
  int seconds = timeinfo.tm_sec;

  lcd.setCursor(8, 0);
  lcd.print(seconds & 1 ? "." : " ");
  lcd.setCursor(8, 1);
  lcd.print(seconds & 1 ? "." : " ");

  col = 0;  number = hours / 10;   showDigit();
  col = 4;  number = hours % 10;   showDigit();
  col = 9;  number = minutes / 10; showDigit();
  col = 13; number = minutes % 10; showDigit();
}

void displayDHT() {
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // Celsius
  float f = dht.readTemperature(true);


  lcd.clear();

  if (isnan(h) || isnan(t)) {
    lcd.setCursor(0, 0);
    lcd.print("DHT Error");
    return;
  }

  lcd.setCursor(0, 0);
  lcd.print("Temp C: ");
  lcd.print(t, 1);
  lcd.print((char)223);
  lcd.print("C");

  

  lcd.setCursor(0, 1);
  lcd.print("Temp F: ");
  lcd.print(f, 1);
  lcd.print((char)223);
  lcd.print("F");
}

void displayDHTH() {
  float h = dht.readHumidity();

  lcd.clear();

  if (isnan(h)) {
    lcd.setCursor(0, 0);
    lcd.print("DHT Error");
    return;
  }

  lcd.setCursor(0, 0);
  lcd.print("Humid : ");
  lcd.print(h, 1);
  lcd.print("%");
}